3965657 has 4 divisors (see below), whose sum is σ = 4013520. Its totient is φ = 3917796.

The previous prime is 3965653. The next prime is 3965659. The reversal of 3965657 is 7565693.

3965657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7565693 = 1723 ⋅4391.

It is a cyclic number.

It is not a de Polignac number, because 3965657 - 2² = 3965653 is a prime.

It is a d-powerful number, because it can be written as 3 + 9⁵ + 6 + 5⁹ + 6 + 5⁹ + 7³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3965653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23807 + ... + 23972.

It is an arithmetic number, because the mean of its divisors is an integer number (1003380).

Almost surely, 2^3965657 is an apocalyptic number.

It is an amenable number.

3965657 is a deficient number, since it is larger than the sum of its proper divisors (47863).

3965657 is an equidigital number, since it uses as much as digits as its factorization.

3965657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47862.

The product of its digits is 170100, while the sum is 41.

The square root of 3965657 is about 1991.3957416847. The cubic root of 3965657 is about 158.2844978353.

The spelling of 3965657 in words is "three million, nine hundred sixty-five thousand, six hundred fifty-seven".